package com.sky.controller.user;


import com.sky.constant.StatusConstant;
import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController("userDishController")
@RequestMapping("/user/dish")
@Api(tags = "C端-菜品接口")
@Slf4j
public class DishController {
	@Autowired
	private DishService dishService;
	@Autowired
	private RedisTemplate redisTemplate;

	@GetMapping("/list")
	@ApiOperation("根据分类查询菜品")
	public Result<List<DishVO>> list(@RequestParam(required = false, value = "categoryId") Long categoryId) {
		log.info("查询分类下的菜品：{}", categoryId);

		//查询redis，有就返回
		String key = "dish_" + categoryId;
		List<DishVO> dishList = (List<DishVO>) redisTemplate.opsForValue().get(key);
		if (dishList != null && !dishList.isEmpty()) {
			//如果存在，直接返回，无须查询数据库
			log.info("从redis中读取菜品：{}", dishList);
			return Result.success(dishList);
		}

		Dish dish = new Dish();
		dish.setCategoryId(categoryId);
		dish.setStatus(StatusConstant.ENABLE);
		dishList = dishService.list(dish);
		//放到redis中
		redisTemplate.opsForValue().set(key, dishList);

		return Result.success(dishList);
	}

}
